
(/VERSIONCHECK 2) 

(DEFPARAMETER |DifferentialExtension;CAT| 'NIL) 

(DEFPARAMETER |DifferentialExtension;AL| 'NIL) 

(DEFUN |DifferentialExtension| (#1=#:G1797)
  (LET (#2=#:G1798)
    (COND
     ((SETQ #2# (|assoc| #3=(|devaluate| #1#) |DifferentialExtension;AL|))
      (CDR #2#))
     (T
      (SETQ |DifferentialExtension;AL|
              (|cons5| (CONS #3# (SETQ #2# (|DifferentialExtension;| #1#)))
                       |DifferentialExtension;AL|))
      #2#)))) 

(DEFUN |DifferentialExtension;| (|t#1|)
  (PROG (#1=#:G1796)
    (RETURN
     (PROG1
         (LETT #1#
               (|sublisV| (PAIR '(|t#1|) (LIST (|devaluate| |t#1|)))
                          (COND (|DifferentialExtension;CAT|)
                                ('T
                                 (LETT |DifferentialExtension;CAT|
                                       (|Join| (|Ring|)
                                               (|mkCategory|
                                                '(((|differentiate|
                                                    ($ $
                                                     (|Mapping| |t#1| |t#1|)))
                                                   T)
                                                  ((|differentiate|
                                                    ($ $
                                                     (|Mapping| |t#1| |t#1|)
                                                     (|NonNegativeInteger|)))
                                                   T)
                                                  ((D
                                                    ($ $
                                                     (|Mapping| |t#1| |t#1|)))
                                                   T)
                                                  ((D
                                                    ($ $
                                                     (|Mapping| |t#1| |t#1|)
                                                     (|NonNegativeInteger|)))
                                                   T))
                                                '(((|DifferentialRing|)
                                                   (|has| |t#1|
                                                          (|DifferentialRing|)))
                                                  ((|PartialDifferentialRing|
                                                    (|Symbol|))
                                                   (|has| |t#1|
                                                          (|PartialDifferentialRing|
                                                           (|Symbol|)))))
                                                '((|NonNegativeInteger|)) NIL))
                                       . #2=(|DifferentialExtension|)))))
               . #2#)
       (SETELT #1# 0 (LIST '|DifferentialExtension| (|devaluate| |t#1|))))))) 
